I went last year around mid-June, and didn't find the crowds too bad. And Disney is, to me, so great about moving people quickly. One night when we left the MK, loooong line at bus stop to POFQ. Told DH "Looks like we'll be here forever." The people in back of us turned around and said they were going to get a cab. Well, 15 minutes later we were getting on a bus and when we got to POFQ, that's right, we got off and watched the cab (with the same people from the bus stop) pull up! So I wouldn't worry about it. And if you're in MK on June 17th, and see a "middle-aged" lady wearing a birthday badge, be sure to say "Hi" to me.